<?xml version="1.0" encoding="iso-8859-1" ?>
<?xml-stylesheet type="text/xsl" href="pmathml.xsl"?>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>mathml example</title>
</head>
<body>
<math xmlns="http://www.w3.org/1998/Math/MathML"
display="block">
<msubsup>
<mo mathsize="big">∑</mo>
<mrow>
<mi>k</mi>
<mo>=</mo>
<mn>0</mn>
</mrow>
<mi>n</mi>
</msubsup>
<mfenced separators="" open="(" close=")">
<mfrac linethickness="0">
<mi>n</mi>
<mi>k</mi>
</mfrac>
</mfenced>
<mo>+</mo>
<mfenced separators="" open="{" close="" >
<mtable align="axis" equalrows="false"
equalcolumns="false">
<mtr>
<mtd columnalign="left">
<mi>x</mi>
</mtd>
<mtd columnalign="left">
<mtext >if </mtext>
<mi>x</mi> <mo>></mo> <mn>0</mn>
</mtd>
</mtr>
<mtr>
<mtd columnalign="left">
<mi>y</mi>
</mtd>
<mtd columnalign="left">
<mtext>otherwise</mtext>
</mtd>
</mtr>
</mtable> </mfenced>
</math>
</body>
</html>